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Automatic method for identifying signal interfaces of electronic equipment

A technology of automatic identification and signal interface, applied in the direction of electrical digital data processing, instruments, etc., can solve the problems of signal misjudgment and irrecoverability, and achieve the effect of preventing signal interference and automatic identification of the interface without misjudgment.

Inactive Publication Date: 2007-05-09
APEXONE MICROELECTRONICS SHANGHAI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is a one-time judgment method. Once the signal is disturbed by noise during the judgment process, it may cause misjudgment, and this misjudgment cannot be recovered.

Method used

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  • Automatic method for identifying signal interfaces of electronic equipment
  • Automatic method for identifying signal interfaces of electronic equipment
  • Automatic method for identifying signal interfaces of electronic equipment

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Embodiment Construction

[0030] As mentioned above in the "Background Technology" section and referring to the relevant content of US Patent No. 6,460,094B1, it can be seen that the differences between the two interface methods of USB and PS2 are obvious in terms of transmission protocols and electrical characteristics, but there are also Commonality in physics and usage. Therefore, as long as the judgment method is reasonable, it is achievable to integrate peripheral devices compatible with the two interface modes.

[0031]The present invention provides an interface type automatic identification method with high reliability and no misjudgment, which is suitable for peripheral devices compatible with at least a first type interface and a second type interface and at least a first type interface and a second type interface host system, wherein the first and second types of interfaces respectively include a first signal wire (L1) and a second signal wire (L2), and the signal mode of the peripheral devic...

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Abstract

A method for automatically identifying signal interface of electronic device includes entering confirmation judgment course after prejudgment course and automatically jumping to another interface mode if prejudgment error is discovered then locking the state after relevant communication command from host system is received so that interface type connected with peripheral units can be automatically identified.

Description

【Technical field】 [0001] The invention relates to an automatic identification method for a signal interface of an electronic device, in particular to an automatic identification method for a USB / PS2 interface used to connect peripheral equipment and a computer host system. 【Background technique】 [0002] With the rapid development of computer technology, more and more electronic devices can be connected to the computer host system through the same or different interfaces to realize data circulation and processing. For example, a keyboard and a mouse as input devices of the host system are mainly connected to the host through a USB (Universal Serial Bus, Universal Serial Bus) interface or a PS2 (Personal System / 2, personal system interface developed by IBM) interface. The PS2 interface has long been a basic standard for connecting the keyboard / mouse to the host computer, but after Intel Corporation developed a USB bus architecture that supports hot plugging, in recent years t...

Claims

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Application Information

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IPC IPC(8): G06F13/40
Inventor 欧召辉李碧洲
Owner APEXONE MICROELECTRONICS SHANGHAI
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